Assembla
GitHub
BitBucket
GitLab
Phabricator
SourceForge
Jira
Gerrit Code Review
Atomic
Invision
Marvel
UXpin
Proto.io
Framer
Sketch
Justinmind
AssemblaAssembla is recommended for software development teams looking for a comprehensive project management platform with strong version control support. It is particularly suited for distributed teams and organizations that require integration with tools like Git, Perforce, and Subversion. It may also be a good fit for teams that need detailed tracking and reporting capabilities.
GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
Invision - Prototyping and collaboration for design teams
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.
Marvel - Turn sketches, mockups and designs into web, iPhone, iOS, Android and Apple Watch app prototypes.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
UXpin - Design is really about solving problems. UXPin is the UX Design Platform that gets that right.